to the people who think they are cool

What is the most obnoxious thing a person has even done to or around you? Let me start blaring bad music at 9 in the morning just cause it is reading days. But it got me thinking: Maybe they think they are being cool. I feel like someone should write a book on the difference between cool and obnoxious and frankly I want it to happen soon. ANYWAY seriously what is the most obnoxious thing that has happened to you?

Frat guys yelling and banging on new bros' doors at 7 AM. Yeah...remember that? And then alternately, several hours later squealy sorority girls doing the same thing. College is only okay sometimes. :/

Pot smoke is always annoying. Especially when it is a vile mixture of pot/alcohol/popcorn. Sometimes I am glad I don't live in a freshman dorm anymore.

Or maybe they are just sitting and you are thinking way too much about it...The only reason I would be annoyed at them would be because they have time to just sit and not be in the library. But maybe I shouldn't judge too hard on people who can plan their course loads better than I.